However, [Yoshihito] has them stashed underneath the sheet of paper, with magnets controlling the pens. His drawbot consists of a platform (cleverly, an inverted LEGO plate) upon which a sheet of ...

but if we are prepared to sacrifice its need for an infinitely long paper tape it’s quite possible to build one. This is what [The Bananaman] has done using LEGO as a medium, and if you’d like ...